Yes, there is stuff like that, which is especially useful with Short-Ranged Magic. Whips already have a good reach.
There are other ways, too. For example, give your Talisman a ghost touch power with a lot of penetration so you can touch spirits without making your body directly touchable. Or, for example, you might encase yourself in your Talisman (think Ironman) and still be able to touch things. There are a whole bunch of ways this can work well situationally.
I'm not sure about the bidirectional part you say doesn't work, though. For Touch effects, you don't need to touch all of a target, just part of it, right? And your Talisman is a part of you when you're touching it. However, certain things wouldn't work through that even if Touch effects can; for example, crushing the end of the Talisman wouldn't crush your body nor your hand.